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freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/bootstrap/use-responsive-design-with-bootstrap-fluid-containers.md

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---
id: bad87fee1348bd9acde08712
challengeType: 0
forumTopicId: 18362
2020-10-01 17:54:21 +02:00
title: 使用 Fluid 容器实现响应式设计
---
## Description
<section id='description'>
之前,在 freeCodeCamp 的 HTML5 和 CSS 章节中我们构建了一个 Cat Photo App。这次我们将会使用最受欢迎的响应式 CSS 框架 Bootstrap 来美化它。
Bootstrap 会根据你的屏幕大小来调节 HTML 元素的大小————因此称为 <code>Responsive Design</code>(响应式设计)。
通过响应式设计,我们将无需额外设计一个手机版的网页,因为它在任何尺寸的屏幕上看起来都还不错。
无论开发什么应用,你都可以通过将以下代码添加到你的 HTML 顶部来引入 Bootstrap 。
<code>&#60;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"/&#62;</code>
在该案例中,我们已经帮你把相应代码添加到页面中。记住使用 <code>></code><code>/></code> 闭合 <code>link</code> 标签来保证引入成功。
首先,我们应该把所有 HTML 标签放在 class 为 <code>container-fluid</code><code>div</code> 元素下(除了 <code>link</code> 标签和 <code>style</code> 标签)。
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>div</code> 元素的 class 属性应该为 <code>container-fluid</code>
testString: assert($("div").hasClass("container-fluid"));
- text: 确保你的 <code>div</code> 元素有闭合标签.
testString: assert(code.match(/<\/div>/g) && code.match(/<div/g) && code.match(/<\/div>/g).length === code.match(/<div/g).length);
- text: 确保你已经将所有 HTML 元素内嵌在闭合的 <code>style</code> 标签后的 <code>.container-fluid</code> 元素中。
testString: assert($(".container-fluid").children().length >= 8);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='html-seed'>
```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
</style>
<h2 class="red-text">CatPhotoApp</h2>
<p>Click here for <a href="#">cat photos</a>.</p>
<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<p>Things cats love:</p>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
```
</div>
</section>
## Solution
<section id='solution'>
```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
</style>
<div class="container-fluid">
<h2 class="red-text">CatPhotoApp</h2>
<p>Click here for <a href="#">cat photos</a>.</p>
<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<p>Things cats love:</p>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<form action="/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
</div>
```
</section>